Akons Brother trying to skip out on child support?

Baby-mama drama must run in the family … Akon‘s lil bro Abou Thiam — a huge record exec — is asking a judge to shoot down his baby mama’s demand for more cash … despite his fat bank account.

According to legal docs filed in Georgia … Abou agreed to shell out $3,000 / month in child support to a woman named Ariel Hakim back in 2010. The pair has one son together.

But Ariel recently filed new docs, asking the court to up Abou’s monthly payment — claiming their kid costs more money now and not only that, she says Abou’s income has increased dramatically.

FYI — Abou is the VP of Def Jam Records and in docs filed in 2010 he listed his income as more than $38,000 PER MONTH.

Abou fired back at Ariel’s request on Nov. 8 — and asked the court to LOWER his monthly payments, despite the fact that he’s pulling in more dough (as admitted in docs).

Abou makes the argument … Ariel moved their son from Georgia to Florida without giving him the proper 30-day notice — which he claims violates his visitation rights and creates a greater financial burden, due to the travel costs.

He’s asking the judge to deny Ariel’s request and hold her in contempt of court.